Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1998-09-18
2000-03-21
Vo, Don N.
Pulse or digital communications
Spread spectrum
Direct sequence
375149, 375152, 370335, 370342, 370441, H04B 169
Patent
active
060410736
ABSTRACT:
A multi-clock matched filter for receiving signals with multipath. The signals may be modulated with a spread-spectrum spreading sequence, or other analog or digital signal. A number of signal registers store digital samples of the received signal. The gating of digital samples into each of the signal registers is controlled by a separate clock timing. The timing sequence may be derived from a common clock. A multiplexer sequentially selects each of the signal registers, and passes the respective content of each signal register to a matched filter. A number of delay-locked-loop circuits track each of the multipath signals, and generate the timing sequence for gating signal registers.
REFERENCES:
patent: 5528624 (1996-06-01), Kaku et al.
patent: 5548613 (1996-08-01), Kaku et al.
patent: 5802102 (1998-09-01), Davidovici
patent: 5809062 (1998-09-01), Hulbert
Davidovici Sorin
Kanterakis Emmanuel
Tran Jimmy Cuong
Golden Bridge Technology Inc.
Vo Don N.
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